Like any mechanical innovation, it has undergone subtle, but significant, improvements in its performance and adaptability over time. The Aerial tube bundle extractor is suitable for use on all Plate and Tube Heat Exchangers up to 2. We consider all safety measure to be sure everyone works in a safe environment and there is no harm for workers. Preferably, some play is constructed in this connection to permit the bar. Postlewaite, Menlo Park, Calii, assignor to California Research Corporation, San Francisco, Calif. Preferably, but not necessarily, the nut 206 is of the ball-bearing type in which a plurality of steel balls 212 circulate in a helical groove, which mates with a similar groove 214 formed in the surface of an internal shaft 216. A pin 82 is rotatably mounted in the free end of the arm 70 and correspondingly a pin 84 is rotatably mounted in the free end of arm 72.
The guide 17 is a plate apt to distribute the bundle weight onto the supports 8, i. This machine is the result of technological development of the overhead axtractor and works without a crane truck. Thus, air Will be introduced into the cylinder 244 when the limit valve 315 is contacted and the roller 24% will be powered into contact with the upper bearing surface of the beam 50 to permit the carriage to be nroved along the beam in a direction toward the shell of the heat exchanger. We are able to bring the truck to the exchanger with ease to lift and transport the equipment for service. Using a wireless remote, a single operator is able to control a lifter from a safe distance.
The force of the roller lifts the carriage until a plurality of spring-loaded rollers, as illustratedbythe rollerzdo, are brought to bear against the lower-bearing 'surface of the beam at a time before the lower-bearing shoes contact the surface, all as will be explained in more detail hereinafter. ChemFab design, build and repair heat exchangers in our shop and in the field. Shaft 216 is restrained from rotation by a bar 218, which is disposed in parallel alignment with the axis of The connector device is designed to accomwhere: the shaft'and rigidly connected to the shaft by a'braced cross-member zztl. However, due to the weight of the apparatus and of the bundle itself, the apparatus must anyhow be blocked onto the ground, and this makes the alignment particularly cumbersome, often causing a repeated ground positioning and disengaging of the apparatus, each time involving the vehicle carrying the apparatus to realise even minor adjustments. Also, by standardizing the thickness of all the connector plates used, the tube bundle extractor can be connected expeditiously to the shell of any heat exchanger equipped with connector plates since the position in which the nut 164 is placed in detaching the tube bundle extractor from one shell will not have to be changed during the initial stages of its connection to another shell. Thus, when the reversible air motor 196 is operated, the shaft 216 will move outwardly or inwardly relative to the housing 200 toward or away from the heat exchanger. This is in addition to any stress from high pressures from the fluids themselves.
Other modifications than those described herein may be made to the apparatus of this invention without departing from the inventive concept. Bundle extractors pull the bundle out of the heat exchanger by using a hydraulic ramp, before the entire unit is lowered down by a large crane. Or we can provide an operator with more experience than anyone in the industry to train and certify your employees. Further scope of the applicability of the present invention will become apparent from the detailed description given hereinafter. The entire process is planned and executed by managers and field service teams that lead the industry in experience and skills.
After the trailer 40 has been blocked on the ground by means of the jacks 5, the aligning step of the apparatus 1 with the bundle to be extracted can be carried out without further displacements of the trailer 40, but merely by shifting the guide frame 7 transversally with respect to the supports 8 and to the column 6. A stationary pin 46-6 passes diametrically through this assemblage and is afiixed to the cylinder 399 and to the piston 4432. This arrangement provides a means for rapidly clamping and unclamping the parts since a few turns of the nut 164- will release the forked block and permit it to be withdrawn from the assemblage. Any cleaning and mechanical services needed are fully integrated into the process. The apparatus 1 comprises a guide frame 7, coupled to the hoisting column 5 by suitable supports 8.
Travis and Hydro-Extractors in 1969. Each element 86 has rigidly aflixed to or integrally formed with it, a projecting portion 94 which extends 4 laterally from it in a radially outwardly direction relative V to the axis of its complementary pin 82 and 84. We were the first company to develop, design and manufacture a bundle extractor. Such shells, due to their function, are subjected to periodical maintenance stops for attaining the faultless operation thereof. Also testing repairing and cleaning of u tube bundle heat exchanger with expert team. The parts are constructed to cause the lower rollers, as 246, to come into contact with the lower bearing surface 138 of the beam prior to the time the lower bearing shoes 182 and 184 contact this surface. As stated heretofore, the tube bundle is made up of individual tubes of small diameter which are quite flexible.
It has been the practice in many processing installations to provide permanent auxiliary steel frameworks as an adjunct to the supporting structure for the heat exchangers to facilitate the servicing of the tube bundles. The carriage 5% is formed with a second unitary projecting portion 534 which extends upwardly through a longitudinal channel 536 in the beam to a central location within the carriage and suports a nut 53% in axial alignment with the threaded shaft 506 which shaft engages the nut. A superior alternative to metals, glass and other tube materials for enhanced heat exchanger efficiency, uptime and reliability: High Thermal Conductivity. This arrangement forms a stable platform upon which the operator of the tube bundle extractor can stand in a position where he can observe the interaction of the tube bundle extractor, the shell of the heat exchanger and the tube bundle while he is manipulating the various controls of the apparatus. It is apparent from the foregoing description that the apparatus of this invention fulfills the objects for which it was designed. Bolt Torquing — Bolt torquing refers to the process of fastening and securing bolts using torque. This structure forms a compact assemblage which can be maneuvered more readily and with less powerful lifting equipment into and out of engagement with the shell of the heat exchanger than can self-contained tube bundle extractors used heretofore.
A handle 45% secured to the eye 474 assists in manipulating the eye into a position between the projecting webs 432 and 484 secured to the transverse member 452 and into alignment with an opening 486 in web 482 and with the pin 476. Another object of this invention is to provide an improved connecting means for connecting a portable tube bundle extractor to the shell of the heat exchanger. The 30 ton capacity of a lifter means that almost all standard tube bundles can be moved in this way, and the 3. Our Exchangers are professionally designed and built to the latest industry standards and requirements. The beam supports a movable carriage which is connected to the separable tube bundle and through which force can be exerted upon the tube bundle to extract it from or insert it into its shell.
Every detail was considered in specifying new machinery, down to environmentally safe transportation equipment with spill-prevention devices. The device 14 can be moved onto the guide frame 7 along the longitudinal direction, and it comprises a slide and a hydraulic motor with a reduction gear meshing racks 21. Grob has the ability and tecnology to manufacture heat exchanger tubes from roll forms on tubing or sheet metal drums. Thus, when air pressure is directed into the cylinder 244, the carriage will be stably supported entirely by the four rollers. The arms are mounted to swing in a vertical plane toward and away from the longitudinal axis of the cylindrical shell of a heat exchanger with which the tube bundle extractor is aligned.